3the unit to record video、music signals from external sources. AV Input and Output – Supports AV input function. You can enjoy television programsthrough the large screen of MP400. Also supports AV output function, and you cantransfer video and music signals of the MP400 to external devices (such as television). USB 2.0 Interface – Supports USB 2.0 High-Speed and Full-speed operation. SD/MMC Card Slot – Supports Extended SD/MMC Card. Battery – In-board chargeable Li-Polymer battery, which can repeatedly charge thebattery. Video Format Conversion – You can convert unplayable video files into playable formatthrough video format conversion software. Multi-Languages –Supports many languages, including simplified Chinese, traditionalChinese, English, French, German, Italian, Dutch and Spanish Firmware upgrade – Support firmware upgrade.2. Button Location3. Packaging / AccessoriesPlease confirm the packaging and accessories have the contents below:9 Acer MP400 Player9 User’s Manual9 Power Adapter9 Installation CD9 AV Cable9 USB Cable9 Stereo earphones9 Pretection cover1 Dc In 7 Power 13 Up2 Earphone 8 TV/Hold 14 Enter3 Av In 9 VOL - 15 Down4 Av Out 10 VOL+ 16 MIC5 USB connecter 11 Menu 17 Power Led6 SD/MMC Card Slot 12 Esc